There is nothing more routine than a company bankruptcy filing in federal court. It happens every day.

But, there's a unique bankruptcy filing happening right now.

A company called GT Advanced, which was supposed to supply Apple with screens for the iPhone, is going bankrupt. Apple is battling to keep one part of the $1.5 billion bankruptcy case a total secret.

Media companies are now fighting in court to undo Apple's secrecy bid.

We reached out to Apple for comment but did not hear back.

The GT Advanced story is odd. GT Advanced sells supplies to make sapphire, which is a durable, scratch-resistant material. GT struck a deal with Apple to start making sapphire, which could be used for iPhone 6 screens. Weeks before Apple announced the iPhone 6, there were reports that Apple would be using sapphire screens from GT Advanced.

But Apple ended up not using GT's glass in the iPhone 6. It turns out GT struggled to make the glass to Apple's standards. And now GT — which has 1,100 employees and $1.5 billion in assets, according to court papers seen by Business Insider — is out of business.

Ahead of a court hearing on Wednesday in New Hampshire, GT's lawyers are arguing that even more information about its relationship with Apple should be published, in the interests of creditors and shareholders.

In filings last week, the Arizona-based manufacturer called its supplier agreement with Apple "oppressive and burdensome."

But Apple may lose its fight to keep the GT case under wraps: the Dow Jones Co., parent of The Wall Street Journal, and Bloomberg have successfully intervened in the case, and the judge will now hear arguments as to whether that secrecy will continue.

Here is what The Journal is complaining about:

US Federal Bankruptcy Court

The whole thing is very strange. While bankruptcies are often contentious — after all, they involve people who are angry that they're owed money, and people who are angry that they went out of business — they aren't often secret. The broad purpose of bankruptcy court is to figure out what assets the company has left, and how those assets should be divided among the people who are owed money. Bankruptcies don't generally concern themselves with the details of the proprietary technological knowledge of the out-of-business company. GT has described the bid to keep everything secret as "unusual (and perhaps unprecedented)."

Because Apple and GT have so far made their filings under seal, it's not clear what, exactly, Apple is afraid of.

Here is one clue. In its motion, Apple specifically mentions that it wants its contracts kept a secret: